AIPMT MAINS2010Botany-Genetics
AIPMT MAINS 2010 Botany Monohybrid Cross MCQ Question
Type: MCQ-conceptual-Medium-Class 12
In Antirrhinum two plants with pink flowers were hybridized. The F₁ plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization? Red flower colour is determined by RR, and white by rr genes.
A
rrrr
B
RR
C
Rr
D
rr
Correct Answer
Option C
Detailed Explanation
The F₁ generation shows a 1:2:1 ratio of red:pink:white, indicating a heterozygous cross (Rr x Rr).
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